CN109393660B - Zipper assembly device - Google Patents
Zipper assembly device Download PDFInfo
- Publication number
- CN109393660B CN109393660B CN201710704282.7A CN201710704282A CN109393660B CN 109393660 B CN109393660 B CN 109393660B CN 201710704282 A CN201710704282 A CN 201710704282A CN 109393660 B CN109393660 B CN 109393660B
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- China
- Prior art keywords
- slider
- pair
- clamp
- zipper
- sensing member
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- 238000007689 inspection Methods 0.000 claims abstract description 43
- 230000002950 deficient Effects 0.000 description 12
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
- A44B19/62—Assembling sliders in position on stringer tapes
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- Slide Fasteners (AREA)
Abstract
本发明提供一种拉链组装装置，能够检查拉头是否已正常安装至拉链。该拉链组装装置包括：多个夹钳装置(20)，抓持规定长度的拉链链条(C2)；拉头安装部(15)，在拉链链条(C2)上安装拉头(SL)；以及检查部(30)，检查拉头(SL)是否已正常安装至拉链链条(C2)，夹钳装置(20)包括抓持拉链链条(C2)的一对拉链带(T)的一对夹钳部(20A)，检查部(30)包括：拉头感测构件(43)，可沿上下方向移动地设置，感测拉头(SL)；拉头传感器(44)，检测拉头感测构件(43)的移动量是否已达到规定移动量；以及一对夹钳移动部件(32)，使一对夹钳部(20A)的夹钳(23)朝彼此远离的方向移动。
The present invention provides a zipper assembly device capable of checking whether the slider is normally installed to the zipper. The zipper assembly device includes: a plurality of clamp devices (20) for grasping a zipper chain (C2) of a predetermined length; a slider attachment part (15) for attaching a slider (SL) to the zipper chain (C2); and an inspection part (30) to check whether the slider (SL) is properly attached to the zipper chain (C2), the clamping device (20) comprises a pair of clamping parts for grasping a pair of zipper tapes (T) of the zipper chain (C2) (20A), the inspection part (30) includes: a slider sensing member (43), which is movably arranged in the up-down direction, and senses the slider (SL); and a slider sensor (44), which detects the slider sensing member (SL). 43) whether the movement amount has reached a predetermined movement amount; and a pair of clamp moving members (32) move the clamps (23) of the pair of clamp portions (20A) in a direction away from each other.
Description
Technical Field
The present invention relates to a slide fastener assembling apparatus for sequentially processing a continuous fastener chain (continuous fastener chain) to finally form a slide fastener (slide fastener).
Background
As a conventional slide fastener assembling apparatus, there is known one including: a rack; a rotary table (table) arranged on the bench; the fixed platform is arranged above the rotating platform; six gripper (grip) devices mounted on the turntable; a cutting device for cutting the continuous zipper chain into zipper chains with a specified length; a slider (slider) mounting means for mounting a slider on the cut slide fastener chain; and an upper stop attaching device that attaches an upper stop to a fastener chain to which a slider is attached (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2005-102715
Disclosure of Invention
[ problems to be solved by the invention ]
However, in the slide fastener assembling device described in patent document 1, the contents of checking whether or not the slider is normally attached to the slide fastener are not described.
The present invention has been made in view of the above problems, and an object thereof is to provide a slide fastener assembling device capable of checking whether or not a slider is normally attached to a slide fastener.
[ means for solving problems ]
The object of the present invention is achieved by the following configuration.
(1) A slide fastener assembling apparatus characterized by comprising: a rotating shaft extending in the vertical direction; a rotary table mounted on the rotary shaft and rotating a predetermined angle each time; a fixed table disposed above the rotary table; a plurality of gripper devices provided on the rotary table and gripping the fastener chain of a predetermined length; a slider mounting portion provided on the fixed base, the slider being mounted on the fastener chain; and an inspection section provided at the fixed stage, inspecting whether or not the slider has been normally mounted to the fastener chain, the clamp device including a pair of clamp portions that grip a pair of fastener tapes of the fastener chain, the inspection section including: a slider sensing member which is provided movably in the vertical direction and senses the slider; a slider sensor (sensor) for detecting whether the amount of movement of the slider sensing member has reached a predetermined amount of movement; and a pair of clamp moving members for moving the clamps of the pair of clamp portions in a direction away from each other.
(2) The slide fastener assembling apparatus according to (1), wherein the pair of gripper moving members are a pair of cams (cam).
(3) The slide fastener assembly apparatus according to (2), wherein the clamp portion includes a cam follower (cam follower) which comes into contact with the cam to move the clamp.
(4) The slide fastener assembly device according to any one of (1) to (3), characterized by further comprising: and an upper stop part mounting part for mounting an upper stop part on the zipper chain, wherein the inspection part further comprises an upper stop part sensor for detecting whether the upper stop part mounted on the zipper chain is located at a specified position.
(5) The slide fastener assembly device according to (4), wherein the inspection portion includes: a horizontal frame which is movably arranged along the up-down direction and extends along the left-right direction; a pair of clamp moving members mounted on both left and right end portions of the horizontal frame; and an inspection unit installed at a center of the lateral frame in a left-right direction, the inspection unit including a slider sensing member, a slider sensor, and an upper stopper sensor.
(6) The slide fastener assembling apparatus according to the above (5), wherein the inspection unit includes a cylinder (cylinder) device which drives the slider sensing member in the vertical direction, and a slider sensor which detects whether or not the amount of movement of the slider sensing member has reached a predetermined amount of movement by detecting the stroke amount of the rod (rod) of the cylinder device is provided in the cylinder device.
[ Effect of the invention ]
According to the present invention, there is provided an inspection portion that inspects whether or not a slider has been normally attached to a fastener chain, the clamp device including a pair of clamp portions that grip a pair of fastener tapes of the fastener chain, the inspection portion including: a slider sensing member which is provided movably in the vertical direction and senses the slider; a slider sensor that detects whether or not the amount of movement of the slider sensing member has reached a predetermined amount of movement; and a pair of clamp moving members that move the clamps of the pair of clamp portions in a direction away from each other, so that it is possible to check whether the slider has been normally attached to the slide fastener.
Drawings
Fig. 1 is a plan view illustrating an embodiment of a slide fastener assembling apparatus according to the present invention.
Fig. 2 is a perspective view illustrating the inspection unit and the clamp device shown in fig. 1.
Fig. 3 is a front view illustrating the inspection unit and the clamp device shown in fig. 2.
Fig. 4 is a partially cut-away plan view of the right-hand clamp portion shown in fig. 3.
Fig. 5 is a front view showing a state where the left and right clamp portions open the gap between the fastener tapes.
Fig. 6 is a side view showing a state where the upper stopper sensor detects the upper stopper of the slide fastener.
Fig. 7 is an enlarged front view showing a state where the slider sensing member contacts the slider.
Fig. 8 is an enlarged front view showing a state where the slider is not yet mounted.
Fig. 9 is an enlarged front view illustrating a modification of the tension head sensing member.
Fig. 10 is a plan view illustrating an example of the continuous fastener chain.
[ description of symbols ]
10: zipper assembling device
11: rotating shaft
12: rotary table
13: fixing table
14: cutting part
15: slider mounting part
16: upper stop part mounting part
17: good product discharge part
18: defective product discharge unit
20: clamp device
20A: clamping part
21: support frame
21 a: spring support
22: shell body
22 a: cam insertion groove
22 b: support shaft
23: clamp forceps
24: cam follower
25: spiral spring
30: inspection section
31: transverse frame
32: clamp sliding cam (clamp moving parts)
32 a: cam surface
40: inspection unit
41: slider inspection device
42: cylinder device
42 a: rod
43. 43B: slider sensing member
43 Ba: detecting piece
44: pull head sensor
50: upper stop part sensor
51: supporting plate
C1: continuous zipper chain
C2: slide fastener chain
SF: slide fastener
T: zipper tape
EL: chain tooth row
SL: slider for a slide fastener
SL 1: protrusion
P1: upper stop part
P2: bottom stop part
S: voids
Detailed Description
Hereinafter, an embodiment of a slide fastener assembling apparatus according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, the upper side means the front side with respect to the paper surface of fig. 1, the lower side means the back side with respect to the paper surface of fig. 1, the front side means the radial outer side of the turntable of fig. 1, the rear side means the radial inner side of the turntable of fig. 1, the right side means the circumferential right side of the turntable of fig. 1, and the left side means the circumferential left side of the turntable of fig. 1. The left-right direction is also referred to as a width direction.
As shown in fig. 1, the slide fastener assembling apparatus 10 of the present embodiment includes: a rotating shaft 11 extending in the vertical direction; a rotary table 12 attached to the rotary shaft 11; a non-rotating fixed table 13 disposed above the rotating table 12; a plurality of gripper devices 20 attached to the rotary table 12 and gripping the fastener chain C2 of a predetermined length; a cutting unit 14 for cutting the continuous fastener chain C1 into a fastener chain C2 of a predetermined length; a slider mounting portion 15 for mounting a slider SL on the fastener chain C2; an upper stopper mounting part 16 to which an upper stopper P1 is attached to the fastener chain C2; an inspection unit 30 for inspecting the fastener SF finally processed by attaching the upper stop portion P1; a good product discharge portion 17 for discharging the good product zipper SF to a good product collection portion; and a defective product discharge unit 18 configured to discharge the defective product zipper SF to the defective product collection unit.
The rotary table 12 is rotated by a predetermined angle at a time by the rotary shaft 11. The plurality of clamp devices 20 are arranged on the rotary table 12 at predetermined intervals in the circumferential direction according to the rotation angle of the rotary table 12. Specifically, six gripper devices 20 are arranged on the rotary table 12 every time the rotary table 12 rotates 60 degrees. The rotary table 12 is a hexagonal shape in plan view, and a clamp device 20 is disposed on each side of the rotary table 12. The turntable 12 is not limited to a hexagonal shape in plan view. The turntable 12 may have a polygonal plan view such as a pentagonal or octagonal shape. The turntable 12 may be circular in plan view. The cutting portion 14, the slider mounting portion 15, the upper stop mounting portion 16, the inspection portion 30, the good product discharge portion 17, and the defective product discharge portion 18 are disposed on the fixed base 13 at predetermined intervals in the circumferential direction. Further, the good product discharge portion and the defective product discharge portion may be a single discharge portion. At this time, the single discharge unit sorts the good product and the defective product of the slide fastener SF.
Here, a slide fastener SF attached to the slide fastener assembly apparatus 10 of the present embodiment will be described. As shown in fig. 3, the slide fastener SF includes: a pair of right and left fastener tapes t (fastener tape); a pair of left and right element rows (element rows) EL provided at the opposing tape side edge portions of the left and right fastener tapes T, respectively; a slider SL for engaging and disengaging the left and right element rows EL; a pair of left and right upper stoppers P1 disposed adjacent to the upper end sides of the left and right element rows EL; and a lower portion P2 disposed adjacent to the lower end sides of the left and right element rows EL. The lower stopper P2 may be an opening member including a seat bar, a seat body, and a plunger.
As shown in fig. 10, the continuous fastener chain C1 is formed by connecting a plurality of fastener chains C2. The fastener chain C2 includes the pair of right and left fastener tapes T, the pair of right and left element rows EL, and the bottom portion P2. Further, a space (space) S of a predetermined length to which the element row EL is not attached is provided between the adjacent fastener chains C2, and the portion of the space S is cut by the cutting portion 14. The continuous fastener chain C1 is supplied to the fastener assembling apparatus 10 with the bottom stop P2 being located downstream. The upstream side or the downstream side is referred to as a reference in the conveying direction of the continuous fastener chain C1.
The clamp device 20 includes a pair of left and right clamp portions 20A, and the pair of left and right clamp portions 20A grip the left and right fastener tapes T of the fastener chain C2. The gripper device 20 grips the fastener chain C2 at the position of the cutting section 14, and releases the grip of the fastener chain C2 at the position of the good product discharge section 17 or the defective product discharge section 18. In fig. 3 to 5, only the right caliper section 20A and the right caliper slide cam 32 are shown, but the left caliper section 20A and the left caliper slide cam 32 have the same configuration.
As shown in fig. 3 and 4, each of the left and right clamp portions 20A includes: a holder (holder)21 fixed to the turntable 12; a case (case)22 slidably attached to the bracket 21 in the left-right direction; and a gripper 23 disposed in the housing 22 and configured to grip the fastener tape T.
A cam insertion groove 22a for inserting a later-described clamp slide cam 32 is formed vertically through the back surface of the housing 22, and a roller-shaped cam follower 24 for sliding the housing 22 in the left-right direction is attached to the cam insertion groove 22 a. The cam follower 24 is rotatably attached to a support shaft 22b provided in the cam insertion groove 22 a.
A spring support portion 21a extending forward is formed at the outer end portion in the width direction of the bracket 21, and a coil spring 25 that biases the housing 22 inward in the width direction is provided between the spring support portion 21a and the housing 22.
In the clamp device 20 having such a structure, the housing 22 slides outward in the width direction by pushing the cam follower 24 with the clamp slide cam 32 of the inspection unit 30 (see fig. 5). Therefore, the clamp 23 will also slide outward in the width direction by sliding the housing 22 outward in the width direction. Therefore, the left and right grippers 23 slide outward in the width direction, and the gap between the left and right fastener tapes T of the fastener chain C2 to be gripped is widened. This allows the slider sensing member 43 to be inserted between the left and right element rows EL.
As shown in fig. 2, 3, and 6, the inspection unit 30 includes: a horizontal frame 31 driven in the vertical direction by a driving device not shown and extending in the horizontal direction; a pair of left and right clamp slide cams (clamp moving members) 32 attached to both left and right ends of the horizontal frame 31; and an inspection unit 40 mounted at the center in the left-right direction of the lateral frame 31. Therefore, the left and right clamp slide cams 32 approach the clamp portion 20A by moving the lateral frame 31 downward, and are separated from the clamp portion 20A by moving the lateral frame 31 upward. Further, the inspection unit 40 approaches the slide fastener SF by the downward movement of the horizontal frame 31, and departs from the slide fastener SF by the upward movement of the horizontal frame 31.
The caliper slide cam 32 moves the calipers 23 of the left and right caliper parts 20A in a direction away from each other, and has a cam surface 32a that contacts the cam follower 24 of the caliper part 20A when the cam moves downward. The cam surface 32a is formed at a lower side portion of the caliper slide cam 32. The cam surface 32a is inclined so that the width of the caliper slide cam 32 gradually increases from the lower end of the caliper slide cam 32 upward.
As shown in fig. 3, the inspection unit 40 includes: a slider checking device 41 that checks whether the slider SL has been normally attached to the fastener chain C2; and a pair of upper stopper sensors 50 for detecting whether or not the upper stoppers P1 attached to the left and right sides of the fastener chain C2 are positioned at predetermined positions.
The slider inspection device 41 includes: a cylinder device 42 fixed to the horizontal frame 31; a slider sensing member 43 mounted on a front end portion of the rod 42a of the cylinder device 42, sensing the slider SL by contacting the slider SL; and a slider sensor 44 attached to the cylinder device 42 and detecting whether or not the amount of movement of the slider sensing member 43 has reached a predetermined amount of movement.
The slider sensing member 43 is provided movably in the up-down direction by the cylinder device 42. And, the slider sensing member 43 contacts the slider SL by moving downward by the cylinder device 42. Further, the moving force of the cylinder device 42 to the tab sensing member 43 is set to a force as follows: a force that cannot move the slider SL downward in a state where both the left and right element rows EL are passed through, and a force that can move the slider SL downward in a state where only one of the left and right element rows EL is passed through.
The slider sensor 44 detects the stroke amount of the lever 42a of the cylinder device 42, thereby detecting whether or not the amount of movement of the slider sensing member 43 has reached a predetermined amount of movement.
The pair of upper stop sensors 50 are attached to a support plate (plate)51, and the support plate 51 is fixed to the front surface of the cylinder device 42 of the slider inspection device 41. When the horizontal frame 31 of the inspection unit 30 moves downward, the pair of upper stopper sensors 50 detect whether or not the left and right upper stoppers P1 of the slide fastener SF gripped by the left and right grippers 23 are positioned at a predetermined position (see fig. 6 and 7).
Next, the operation of the clamp device 20 and the inspection unit 30 according to the present embodiment will be described. First, as shown in fig. 3, the slide fastener SF is conveyed to a predetermined position by the rotation of the rotary table 12. Then, as shown in fig. 5 and 6, the horizontal frame 31 of the inspection section 30 moves downward, whereby the clamp slide cam 32 contacts the cam follower 24 of the clamp section 20A to slide the clamp 23 outward in the width direction. Thereby, the gap between the right and left fastener tapes T is widened. At this time, the coil spring 25 is pushed by the case 22 to contract. At this time, the pair of top stopper sensors 50 detects whether or not the left and right top stoppers P1 of the slide fastener SF are positioned at predetermined positions. In the present embodiment, when the left and right upper stoppers P1 are at the predetermined position, the fastener SF is determined to be good, and when the left and right upper stoppers P1 are not at the predetermined position, the fastener SF is determined to be defective.
Then, as shown in fig. 7, the slider sensing member 43 of the slider inspection device 41 moves downward, whereby the front end of the slider sensing member 43 contacts the upper end of the slider SL. Then, the slider sensor 44 detects whether or not the amount of movement of the slider sensing member 43 at the time of the downward movement has reached a predetermined amount of movement. In the present embodiment, when the slider SL is normally attached, the slider sensing member 43 contacts the slider SL and stops, and therefore the amount of movement of the slider sensing member 43 does not reach the predetermined amount of movement. Thus, the fastener SF is determined to be good.
Further, in a case where the slider SL is not normally attached, for example, as shown in fig. 8, when there is no slider SL, the slider sensing member 43 does not contact the slider SL, and therefore the amount of movement of the slider sensing member 43 reaches a predetermined amount of movement. Thus, the slide fastener SF is judged to be defective. In addition, when the slider SL is not normally attached, in addition to the case where there is no slider SL, there is a case where only one of the right and left element rows EL is inserted through the slider SL. At this time, the slider SL moves downward along the element row EL on the threading side due to the slider sensing member 43 moving downward, and therefore, the amount of movement of the slider sensing member 43 reaches a predetermined amount of movement, and it is determined as a defective product.
Then, after the inspection of the slide fastener SF by the inspection unit 30 is completed, the horizontal frame 31 of the inspection unit 30 is moved upward, and the left and right gripper slide cams 32 and the inspection unit 40 are returned to the initial positions. At this time, the coil spring 25 extends while pushing the housing 22. Thereby, the left and right clamps 23 slide inward in the width direction by the biasing force of the coil springs 25, and return to the initial positions. The slide fastener SF is discharged to the good product discharge portion 17 when the inspection result is good, and is discharged to the defective product discharge portion 18 when the inspection result is bad.
As described above, according to the slide fastener assembly apparatus 10 of the present embodiment, the inspection unit 30 includes: a slider sensing member 43 provided movably in the vertical direction and sensing the slider SL; a slider sensor 44 that detects whether or not the amount of movement of the slider sensing member 43 has reached a predetermined amount of movement; and a pair of clamp moving members 32 that move the clamps 23 of the pair of clamp portions 20A in a direction away from each other, so it can be checked whether or not the slider SL has been normally attached to the slide fastener SF.
Further, according to the slide fastener assembly apparatus 10 of the present embodiment, since the clamp portion 20A includes the roller-shaped cam follower 24, and the cam follower 24 comes into contact with the clamp slide cam 32 to move the clamp 23, the slide movement of the clamp 23 can be made smooth.
Further, according to the slide fastener assembly apparatus 10 of the present embodiment, the check unit 30 further includes the upper stopper sensor 50, and the upper stopper sensor 50 detects whether or not the upper stopper P1 attached to the fastener chain C2 is located at the predetermined position, and therefore can detect whether or not the upper stopper P1 of the slide fastener SF is located at the predetermined position.
Next, as a modification of the present embodiment, as shown in fig. 9, the slider sensing member 43 may be replaced with a slider sensing member 43B having a pair of detectors 43Ba in accordance with the shape of the slider SL. The pair of detectors 43Ba are disposed so as to avoid the projection SL1 provided at the tip end of the slider SL.
The present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the scope of the present invention.
For example, in the present embodiment, the slider sensing member is one, but may be divided into two parts on the left and right, and the cylinder devices may be provided for the slider sensing members divided into two parts.
The clamp moving member may be a pair of cylinders connected to the respective clamp portions. At this time, the clamp of the clamp portion slides in the width direction by the expansion and contraction of the cylinder rod of the cylinder.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710704282.7A CN109393660B (en) | 2017-08-16 | 2017-08-16 | Zipper assembly device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710704282.7A CN109393660B (en) | 2017-08-16 | 2017-08-16 | Zipper assembly device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109393660A CN109393660A (en) | 2019-03-01 |
| CN109393660B true CN109393660B (en) | 2021-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710704282.7A Active CN109393660B (en) | 2017-08-16 | 2017-08-16 | Zipper assembly device |
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| Country | Link |
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| CN (1) | CN109393660B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112704305B (en) * | 2020-12-29 | 2022-01-21 | 安徽星星服装股份有限公司 | Mounting device for back-to-back double-zipper head |
| CN115568673B (en) * | 2022-12-07 | 2023-05-05 | 宿迁市箭鹿制衣有限公司 | Preparation process and preparation equipment of upper and lower synchronous clothing zipper |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0055037A1 (en) * | 1980-12-20 | 1982-06-30 | Yoshida Kogyo K.K. | Inspection method and apparatus for inspecting fastener sliders with automatic lock means |
| CN1259011C (en) * | 2003-09-26 | 2006-06-14 | Ykk株式会社 | Slide fastener manufacturing apparatus |
| CN203505753U (en) * | 2013-11-06 | 2014-04-02 | 温州市信力拉链有限公司 | Spring detection mechanism of zipper slider assembly machine |
| CN104334240A (en) * | 2013-08-22 | 2015-02-04 | Ykk株式会社 | Slide Fastener Manufacturing Device And Slide Fastener Manufacturing Method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007267828A (en) * | 2006-03-30 | 2007-10-18 | Ykk Corp | Slider insertion method and slider insertion device |
| CN106913021B (en) * | 2015-12-24 | 2019-11-08 | Ykk株式会社 | Device and method for inserting element row of zipper chain into slider |
-
2017
- 2017-08-16 CN CN201710704282.7A patent/CN109393660B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0055037A1 (en) * | 1980-12-20 | 1982-06-30 | Yoshida Kogyo K.K. | Inspection method and apparatus for inspecting fastener sliders with automatic lock means |
| CN1259011C (en) * | 2003-09-26 | 2006-06-14 | Ykk株式会社 | Slide fastener manufacturing apparatus |
| CN104334240A (en) * | 2013-08-22 | 2015-02-04 | Ykk株式会社 | Slide Fastener Manufacturing Device And Slide Fastener Manufacturing Method |
| CN203505753U (en) * | 2013-11-06 | 2014-04-02 | 温州市信力拉链有限公司 | Spring detection mechanism of zipper slider assembly machine |
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| CN109393660A (en) | 2019-03-01 |
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